Chapter 21, Problem 21.81QP

Interpretation Introduction

Interpretation:

It should be explained that possibility of ${\text{CH}}_{\text{3}}\text{Br}$ to be photolyze in the troposphere.

Concept Introduction:

• Bond energy: is the amount of energy required to pull two bonded atoms apart which is the same as the amount of energy released when two atoms are brought together into a bond.
• Photodecomposition: is a chemical reaction in which a chemical compound is broken down by photon. And this process is not limited to visible light.
• Energy of photon E $\text{=}\text{hν}\text{=}\frac{\text{hc}}{\text{λ}}$

h is the Plank’s constant its value is $\text{6}\text{.63 ×}{\text{10}}^{\text{-34}}\text{J}\text{.s}$

$\text{ν}$ is the frequency of radiation.

C is the velocity of light it equal to $\text{3×}{\text{10}}^{\text{8}}{\text{ms}}^{\text{-1}}$

$\text{λ}$ is wavelength of radiation.

To determine: the energy needed to break one $\text{C-Br}$ bond.